10mm Auto vs .40 S&W
Part of our full caliber comparison chart — energy, drop and recoil for every handgun caliber side by side.
When comparing 10mm Auto vs .40 S&W calibers for self-defense applications, several key differences emerge in their ballistic performance. The 10mm Auto (175gr JHP at 1150 fps) delivers higher energy throughout its trajectory, maintaining 429 ft-lbs at 50 yards compared to the .40 S&W's (165gr JHP at 1175 fps) 413 ft-lbs. Both calibers demonstrate effective penetration in the optimal defensive range, with the 10mm offering slightly deeper penetration potential. The 10mm generates noticeably more recoil with approximately 30% higher recoil energy (7.69 ft-lbs vs 5.94 ft-lbs). Cost favors the .40 S&W, the cheaper of the two per round in the price tables below. Remember that performance can vary significantly with different ammunition selections, bullet weights, and firearm configurations, so these figures represent common defensive loadings rather than definitive performance benchmarks.
Ammunition Parameters
10mm Auto Parameters (Self-Defense Load)
.40 S&W Parameters (Self-Defense Load)
10mm Auto vs .40 S&W Ballistics Chart
Comparing bullet drop at various ranges between 10mm Auto and .40 S&W.
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10mm Auto vs .40 S&W Energy Comparison
Comparing the muzzle energy and energy retention at various distances between 10mm Auto and .40 S&W.
10mm Auto vs .40 S&W Bullet Penetration
Comparison of estimated penetration depth in 10% ballistic gel between 10mm Auto and .40 S&W at self-defense distances.
Self-Defense Ammunition Penetration
Notes:
- FBI standard for optimal penetration is 12-18 inches in 10% ballistics gel
- These penetration figures come from a model of sectional density, velocity and expansion, not from gel tests. Use them to compare the two calibers, not as a measured result.
- Actual results may vary depending on clothing barriers and other factors
10mm Auto vs .40 S&W Recoil
Comparing recoil energy and impulse between 10mm Auto and .40 S&W.
10mm Auto Recoil (Self-Defense Load)
.40 S&W Recoil (Self-Defense Load)
Notes:
- Recoil calculations based on bullet weight, velocity, powder charge, and firearm weight
- Recoil energy indicates the felt force when firing the weapon
- Recoil impulse represents momentum transfer during firing
- Actual felt recoil can vary based on grip, stance, and firearm design
10mm Auto vs .40 S&W Velocity
Velocity decay from muzzle to 50 yards for 10mm Auto and .40 S&W.
10mm Auto vs .40 S&W Average Cost
Comparing cost per round and training affordability between 10mm Auto and .40 S&W.
Cheapest 10mm Auto Deals
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